JP2007295173A - Compact stereo-integrated speaker system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stereo-integrated speaker system for music listening, of which the occupied installation area is small, the high-fidelity sound quality can be obtained and the sound spread is natural. <P>SOLUTION: The stereo-integrated speaker system is constituted of connecting the right, left and center speaker units by matrix wiring and arranging the left, right and center speakers in an integrated enclosure, of which the sound quality is improved by a double-bass reflex system, a back-loaded horn system, or the like in a three-dimensionally aggregated state with angles. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a method for manufacturing a speaker system.

For 2-channel stereo playback, the left and right speakers should be spread out appropriately, and listeners should listen at the apex of an isosceles triangle with the left and right speakers as the base, and ideally close to an equilateral triangle. Ideally arranging a plurality of speakers in a stereo system leads to a substantial increase in the occupied installation area. Therefore, a speaker system having a small occupied installation area and excellent sound quality has been desired. In addition, there are measures to improve stereo sound field reproducibility by adopting a matrix wiring connection method between units for stereo integrated speakers, but left and right speaker units are moved to the left and right of the center speaker unit. Since they are arranged horizontally, it has been difficult to make an enclosure with a relatively small occupation area. In addition, if the speaker system is a miniaturized speaker system, it is possible to reduce the size of the enclosure and reduce the occupied installation area. It was difficult to achieve sound quality.
JP 2002-159089 A Noto 3105482

In general, commercially available stereo systems tend to be unacceptably large when aiming for sound fidelity. Also, when aiming for sound spread or faithful sound field reproduction, install the speaker far enough, and placing the speaker close to walls or furniture often degrades the sound quality. Therefore, the substantial occupied installation area tends to be larger. In contrast, stereo systems with small footprints, such as so-called radio cassettes and mini-components, tend to have little change in timbre depending on the listening position, but the fidelity of the sound is low or the type of music to be played is not suitable for It tends to occur. Therefore, there is a demand for a stereo system with a small occupied installation area, a listening position that is not so limited, and a high sound fidelity so that music lovers can fully enjoy music.
The present invention has been made to solve such a conventional problem, and the object of the present invention is high sound fidelity and occupied footprint in a space such as a general house or a small-scale business office. It is a small speaker system that can fully enjoy music.

The center, left, and right speaker units are connected in a matrix wiring manner, and these are arranged in a columnar enclosure, and the speaker units are three-dimensionally arranged in different horizontal positions as shown in FIG. The horizontal distance of each of the left and right speaker units from the listener is contrasted on the left and right with the center speaker as the center.

Separate air chambers for the central speaker unit and left and right speaker units. The air chambers of the left and right speaker units may be independent on the left and right.

The central speaker unit is a back loading horn type enclosure or a double bass reflex type enclosure in order to improve sound quality.

In the case where the left and right speaker units have the same air chamber, a partition wall or a sound deadening material is disposed between the units in order to reduce the interference of sound between the units. In addition, in order to reduce the reverberation sound in the air chamber, an appropriate silencer and duct are arranged, and the duct does not interfere with the progress of the sound wave in the back loading horn for the central speaker unit or the second air chamber of the double bass reflex. Open in the direction.

In order to improve the sound quality of the central speaker unit, a plurality of central speaker units may be provided. In this case, a plurality of central speaker units are arranged in series to perform the same operation.

Each speaker unit may be coated with lacquer on the diaphragm of each speaker in order to improve sound quality. Each speaker unit is a full-range type, but may be a plurality of speaker units, and the speaker units may be divided for each frequency band.

As the material of the enclosure, particle board, medium density fiber board, natural wood, aluminum, iron, plastic and the like can be used. In order to prevent the speaker system from toppling over, a pedestal with a large area or a heavy pedestal is preferably provided. If the total height is extremely high, it is preferable to support from a ceiling or a wall.

When installing a pedestal, the rear part of the pedestal has a trapezoid with a hypotenuse of about 45 degrees on the left and right so that it can be along the sides and corners of the wall to improve sound quality and reduce the substantial occupied area. It is good to do.

In order to enhance the reproduction effect of the stereo sound field, it is desirable that the connected player or amplifier has a higher quality and excellent phase characteristics. Also, so-called balanced amplifiers cannot be connected.

In the speaker system of the present invention, since the left and right speaker systems that have been conventionally configured can be configured integrally, the substantial occupied installation area of the entire device including the space around the speaker, It can be greatly reduced.

For example, in the case of using a speaker unit having an 8 cm diameter, the horizontal cross-sectional area can be approximately 13 cm × 13 cm at the pillar portion. Further, the substantial occupied floor area including the space around the speaker that is normally required can be reduced.

Since the sound quality is improved by the backloading horn type and the double bass reflex type, a wide sound range can be reproduced regardless of the small unit, and high-fidelity music reproduction can be performed.

By appropriately silencing the air chambers of the left and right speaker units, mutual interference between the left and right speaker units is reduced, and clear sound quality can be obtained.

By arranging multiple central speaker units in series and operating them in the same way, the driving power of the central speaker unit is increased, the operation fidelity is improved, and a wide sound range can be reproduced despite the small unit. Faithful music playback.

By coating lacquer on the diaphragm of the speaker unit, it is possible to improve sound quality, reduce leakage of reverberant sound from the air chamber to the front, and change the color.

Compared to the case where the left and right speaker units are spread out, there is less discomfort associated with the timbre change due to the listening position and the difference in the arrival time and phase of the sound, so it is not limited to the ideal listening position, so you can enjoy music be able to.

Hereinafter, the form which implement | achieves the speaker unit of this invention based on drawing is demonstrated.

As shown in FIG. 1, the speaker system of this patent has a right speaker unit 1, a left speaker unit 2, a center speaker unit 3, and an enclosure 4 as main components. The right speaker unit 1, the center speaker unit 3, and the left speaker unit 2 are arranged at an angle of about 45 degrees, but can be set to 0 to 90 degrees.

The right speaker unit 1 and the left speaker unit 2 are arranged at the same height, the central speaker unit 3 is arranged at a different height from the other speaker units, and the horizontal distances from the listeners are compared with the left and right. To do. The enclosure 4 has an attachment angle corresponding to the height so that each speaker unit is appropriately arranged, but it may have a cylindrical shape or the like.

The wiring connection of each speaker unit is a so-called matrix connection system as shown in FIG. The left speaker unit L applies an LR signal, the right speaker unit R applies an RL signal, and the central speaker unit applies an L + R channel signal or a difference signal to generate respective sound waves.

The sound waves emitted from the respective speaker units are mixed as they reach the listener, and mainly the L channel sound reaches the listener's left ear and the R channel sound mainly reaches the right ear. Thereby, the listener can experience the reproduction of the stereo sound field regardless of one speaker system.

Next, a speaker system according to the second embodiment is shown in FIG.
In this example, although it is similar to the speaker system of the first embodiment, the occupied floor area is further reduced as compared with the speaker system of the first embodiment. As in the first embodiment, the right speaker unit 1, the left speaker unit 2, the center speaker unit 3, and the enclosure 4 are the main components.

The right speaker unit 1 is arranged higher than the central speaker unit 3, and the left speaker unit 2 is arranged lower than the central speaker unit 3. The heights of the right speaker unit 1 and the left speaker unit 2 may be reversed. The enclosure 4 has an attachment angle corresponding to the height so that each speaker unit is appropriately arranged, but it may have a cylindrical shape or the like. The wiring connection of each speaker unit of the second embodiment is a matrix wiring system similar to that of the first embodiment.

Next, a speaker system according to the third embodiment is shown in FIG.
In this example, the speaker system is similar to that of the first embodiment, but the occupied floor area is further reduced as compared with the speaker system of the first embodiment. As in the first embodiment, the right speaker unit 1, the left speaker unit 2, the center speaker unit 3, and the enclosure 4 are the main components.

The right speaker unit 1, the center speaker unit 3, and the left speaker unit 2 are each arranged at an angle of about 90 degrees. As a result, the planar cross-sectional area can be reduced as compared with the first embodiment, but it becomes difficult to directly reach the listener as the sound goes up. The wiring connection of each speaker unit of the third embodiment is a matrix wiring system similar to that of the first embodiment.

Next, a speaker system according to a fourth embodiment is shown in FIG.
In this example, the enclosure of the speaker system of the first embodiment is shown as an example of a so-called double bass reflex type as a measure mainly for enhancing the low frequency range. As in the first embodiment, the right speaker unit 1, the left speaker unit 2, the center speaker unit 3, and the enclosure 4 are the main components.

The enclosure 4 has a first air chamber 5, a first duct 6, a second air chamber 7, and a second duct 8. The center speaker unit 3 is disposed in the first air chamber 5, and the right speaker unit 1 and the left speaker unit 2 are disposed in the second air chamber 7. The right speaker unit 1 and the left speaker unit 2 may be disposed in the first air chamber 5. The wiring connection of each speaker unit in the fourth embodiment is the same matrix wiring system as in the first embodiment.

Next, a speaker system according to a fifth embodiment is shown in FIG.
In this example, the enclosure of the speaker system of the first embodiment is shown as an example of a backloading horn type as a measure mainly for enhancing the low frequency range. As in the first embodiment, the right speaker unit 1, the left speaker unit 2, the center speaker unit 3, and the enclosure 4 are the main components.

The enclosure 4 has a first air chamber 5, a sound path 9, a second air chamber 7, and a duct 10. The center speaker unit 3 is disposed in the first air chamber 5, and the right speaker unit 1 and the left speaker unit 2 are disposed in the second air chamber 7. The right speaker unit 1 and the left speaker unit 2 may be disposed in the first air chamber 5. The wiring connection of each speaker unit of the fifth embodiment is the same matrix wiring system as that of the first embodiment.

Next, a speaker system according to the sixth embodiment is shown in FIG.
In this example, the enclosure of the speaker system of the first embodiment is shown as an example in which a plurality of central speaker units are combined in a back-loading horn type mainly as a measure for enhancing the low frequency range. The right speaker unit 1, the left speaker unit 2, the center front speaker unit 11, the center rear speaker unit 12, and the enclosure 4 are the main components.

The enclosure 4 has a first air chamber 5, a second air chamber 7, a sound path 9, a third air chamber 13, and a duct 10. The center front speaker unit 11 is disposed in the first air chamber 5, the center rear speaker unit 12 is disposed in the second air chamber 7, and the right speaker unit 1 and the left speaker unit 2 are disposed in the third air chamber 13. . The right speaker unit 1 and the left speaker unit 2 may be disposed in the first air chamber 5 or the second air chamber 7.

The wiring connection of each speaker unit of the sixth embodiment is a matrix wiring system as shown in FIG. 8, and the central front speaker unit 11 and the central rear speaker unit 12 operate in the same manner, and the fidelity of each operation is ensured. Build up.

In each embodiment, in order to further improve the sound quality, a speaker unit coated with lacquer may be used.

In each embodiment, the shape of the base for improving the stability is shown in FIG. According to this, it can arrange | position so that a back wall surface may be touched, and it can install adjacent to the corner | angular part of a room.

1 is a speaker system according to Embodiment 1. 4 is a wiring method of each speaker unit according to the first embodiment. 6 is a speaker system according to Embodiment 2. 10 is a speaker system according to Example 3. 10 is a speaker system according to Example 4. 10 is a speaker system according to Example 5. 10 is a speaker system according to Example 6. 10 is a wiring method of each speaker unit according to the sixth embodiment. It is the base concerning each Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Speaker unit for right 2 Speaker unit for left 3 Speaker unit for center 4 Enclosure 5 1st air chamber 6 1st duct 7 Brother 2 air chamber 8 2nd duct 9 Sound path 10 Duct 11 Center front speaker unit 12 Center rear speaker Unit 13 3rd air chamber

Claims (8)

An integrated stereo speaker system employing a matrix wiring connection system, wherein the left and right speaker unit diaphragms and the center speaker unit are arranged so that they do not overlap with each other. 2. The speaker system according to claim 1, wherein the left and right speaker units are attached to the same air chamber, and the air chamber to which the central speaker unit is attached is different. 2. The stereo speaker system according to claim 1, wherein the central speaker unit has a backloading horn type enclosure, and each of the left and right speaker units has a bass reflex type enclosure. 2. The stereo speaker system according to claim 1, wherein the center speaker unit has a double bass reflex type enclosure, and each left and right speaker unit has an air chamber different from that for the center. 5. The stereo speaker system according to claim 3, wherein a phase inversion duct for each of the left and right speaker units is disposed in the back loading horn of the central speaker unit or in the double bass reflex type second air chamber. Speaker system characterized by being made. 2. The stereo speaker system according to claim 1, wherein a plurality of central speaker units are arranged in series, and these are arranged in series and operated in the same manner to improve sound quality. 3. The speaker system according to claim 1, wherein the speaker unit is coated with lacquer to improve sound quality. 2. The stereo speaker system according to claim 1, wherein the left and right rear portions of the pedestal are trapezoidal at about 45 degrees for the purpose of enabling installation at the corners of the room in order to improve sound quality. system.

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